CRITICALVulnerability
Global

Critical PHP Vulnerability (CVE-2026-109618, CVE-2026-109619) [infocon yellow], (Wed, Oct 21st)

·Source: SANS ISC

Updated:

Executive Summary

PHP.net announced that it will release a critical update today. We decided to change the infoCon to YELLOW due to the widespread use of PHP, the expected severity of the flaw (CVSS 9.4), and the availability of early PoC exploits ahead of the patch becoming available. 

Analysis

PHP.net announced that it will release a critical update today. We decided to change the infoCon to YELLOW due to the widespread use of PHP, the expected severity of the flaw (CVSS 9.4), and the availability of early PoC exploits ahead of the patch becoming available. 

Indicators of Compromise (3)

CVE (2)
CVE-2026-109618
NVDMITRE CVE
CVE-2026-109619
NVDMITRE CVE
Domain (1)
PHP.net
VirusTotalURLhaus
Source Attribution

Originally published by SANS ISC on Oct 21, 2026.

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